Havent clicked the article, but isnt he the man who basically wrote cross platform compatability software? Or am I thinking of someone else?
No I think you might be confusing him with the creator of Java, James Gosling. Java is cross platform because the code runs in the Java virtual machine (JVM) and they've written JVMs for most platforms out there. So code written on an Windows machine can/will run on a Linux box with very little additional work needed, if any. It truly is close to write once run anywhere.
RE: Dennis Ritchie, the guy wrote the C programming language that was then extended by Bjarne Stroustroup into C++ and even to Objective-C. Objective-C is a language that was popularized by Steve Jobs when he founded NeXT after he got fired from Apple. All 3 are VERY powerful languages but C was amazing because of what it could do and when it was released.
Yeah I was saddened by the passing of both Jobs and Ritchie. However, I'm also encouraged because both men got to see amazing things happen with their work.
The Unix operating system, which is an incredibly powerful operating system, is used by many large companies today. It was co-created by Ritchie also.
It's pretty hard to overstate what an impact this man had on the computing world.